EP1582722B1 - Im Zylinder Druckaufnehmer - Google Patents

Im Zylinder Druckaufnehmer Download PDF

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Publication number
EP1582722B1
EP1582722B1 EP05005516A EP05005516A EP1582722B1 EP 1582722 B1 EP1582722 B1 EP 1582722B1 EP 05005516 A EP05005516 A EP 05005516A EP 05005516 A EP05005516 A EP 05005516A EP 1582722 B1 EP1582722 B1 EP 1582722B1
Authority
EP
European Patent Office
Prior art keywords
cylinder pressure
piezoelectric element
housing
detection signal
cylinder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
EP05005516A
Other languages
English (en)
French (fr)
Other versions
EP1582722A1 (de
Inventor
Hideki Sakamoto
Satoshi Yamaguchi
Yuuichi Shimasaki
Makoto Kobayashi
Masaki Ueno
Mamoru Hasegawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Niterra Co Ltd
Original Assignee
Honda Motor Co Ltd
NGK Spark Plug Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Honda Motor Co Ltd, NGK Spark Plug Co Ltd filed Critical Honda Motor Co Ltd
Publication of EP1582722A1 publication Critical patent/EP1582722A1/de
Application granted granted Critical
Publication of EP1582722B1 publication Critical patent/EP1582722B1/de
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P19/00—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition
    • F02P19/02—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition electric, e.g. layout of circuits of apparatus having glowing plugs
    • F02P19/028—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition electric, e.g. layout of circuits of apparatus having glowing plugs the glow plug being combined with or used as a sensor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
    • F23Q7/001—Glowing plugs for internal-combustion engines
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
    • G01L23/22—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
    • F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
    • F02D35/023—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions by determining the cylinder pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
    • F23Q7/001—Glowing plugs for internal-combustion engines
    • F23Q2007/002—Glowing plugs for internal-combustion engines with sensing means

Definitions

  • This invention relates to an in-cylinder pressure detection device mounted on an internal combustion engine to detect pressure within a cylinder.
  • an in-cylinder pressure detection device of the above-mentioned kind has been disclosed e.g. in Japanese Laid-Open Patent Publication (Kokai) No. 2002-339793.
  • the detection device is integrally formed with a glow plug inserted into a cylinder head of an internal combustion engine, and has a piezoelectric element.
  • the glow plug is comprised of a housing, a heater case provided at the lower end of the housing, and a center shaft extending upward from the inside of the housing and in contact with the heater case. Further, the glow plug is mounted in the cylinder head by screwing the housing into the cylinder head such that the heater case projects into the combustion chamber.
  • the piezoelectric element is sandwiched between the housing and a nut screwed onto the center shaft, thereby being fixed to the upper end face of the housing in a preloaded state.
  • the detection device when the heater case of the glow plug is distorted due to combustion pressure, the distortion is transmitted to the center shaft, whereby the nut fixing the piezoelectric element is displaced vertically. As a result, the preload on the piezoelectric element is changed to cause distortion of the piezoelectric element, whereby an electric signal indicative of the sensed combustion pressure is output from the piezoelectric element.
  • the above-mentioned center shaft is held in contact with the heater case projecting into the combustion chamber, and hence the center shaft thermally expands due to the heat of high-temperature combustion gases transmitted via the heater case.
  • This thermal expansion also causes upward displacement of the nut pressing the piezoelectric element against the housing. Therefore, in this case as well, the preload on the piezoelectric element is reduced to change the sensitivity of the piezoelectric element, causing the same problem as described above.
  • the present invention provides an in-cylinder pressure detection device for detecting an in-cylinder pressure as a pressure within a cylinder of an internal combustion engine, comprising a housing that has a pair of end walls opposed to each other and is screwed into a body of the engine, an in-cylinder pressure-transmitting member that extends through the housing, the in-cylinder pressure-transmitting member having one end projecting into the cylinder, and a flange part accommodated in the housing, a first piezoelectric element that is accommodated in the housing and sandwiched between one of the end walls and the flange part in a preloaded state, for outputting a first detection signal according to the in-cylinder pressure transmitted via the in-cylinder pressure-transmitting member, and a second piezoelectric element that is accommodated in the housing and sandwiched between the other of the end walls and the flange part in a preloaded state, for outputting a second detection signal according to the in-cylinder pressure transmitted via the in-cylinder pressure-transmitting member.
  • the housing having the pair of end walls opposed to each other is screwed into the body of the engine. Further, the first piezoelectric element is sandwiched in a preloaded state between one of the end walls and the flange part of the in-cylinder pressure-transmitting member extending through the housing, and the second piezoelectric element is sandwiched between the other of the end walls and the flange part in a preloaded state.
  • in-cylinder pressure acts on the one end of the in-cylinder pressure-transmitting member projecting into the cylinder
  • the in-cylinder pressure-transmitting member is compressed. This compression causes displacement of the in-cylinder pressure-transmitting member to reduce the load acting on the first piezoelectric element (disposed e.g.
  • the first piezoelectric element expands, whereby the first detection signal dependent on the in-cylinder pressure is output.
  • the displacement of the in-cylinder pressure-transmitting member causes an increase in the load acting on the second piezoelectric element (disposed e.g. on the other side of the flange part remote from the cylinder).
  • the second piezoelectric element is compressed, whereby the second detection signal dependent on the in-cylinder pressure is output.
  • the tightening of the housing against the body of the engine causes compression of the housing, which places the in-cylinder pressure-transmitting member in relatively elongated relation to the housing.
  • the preload on the first piezoelectric element is reduced, whereas the preload on the second piezoelectric element is increased.
  • the changes in the preload become larger as the tightening torque is higher.
  • the sensitivities of the first and second piezoelectric elements change in the opposite directions in accordance with a change in the tightening torque.
  • the change in the sensitivity due to variation in the tightening torque applied in mounting the in-cylinder pressure detection device is made very small, which makes it possible to ensure stable detection accuracy.
  • the in-cylinder pressure-transmitting member projecting into the cylinder is exposed to high-temperature combustion gases and hence is elongated due to thermal expansion.
  • the preload on the first piezoelectric element is reduced to lower the sensitivity of the first piezoelectric element, whereas the preload on the second piezoelectric element is increased to enhance the sensitivity.
  • the thermal expansion of the in-cylinder pressure-transmitting member also makes the sensitivities of the first and second piezoelectric elements change in the opposite directions. Therefore, similarly to the case of the tightening torque, by combining the first detection signal and the second detection signal, the change in the sensitivity caused by the thermal expansion is made very small, which makes it possible to ensure stable detection accuracy.
  • the sensitivity of the in-cylinder pressure detection device can be improved, which makes it possible to enhance detection accuracy of the in-cylinder pressure detection device.
  • the in-cylinder pressure detection device further comprises an output circuit for outputting the sum of the first detection signal and the second detection signal as a detection signal indicative of the in-cylinder pressure.
  • the sum of the first detection signal and the second detection signal is output by the output circuit as a detection signal indicative of the in-cylinder pressure.
  • the first detection signal and the second detection signal are thus added up in advance, so that it is possible to provide the same advantageous effects as described above. Further, since the single detection signal is output from the in-cylinder pressure detection device, processing of this detection signal can be simplified.
  • an in-cylinder pressure detection device 1 is integrally formed with a glow plug 3 mounted in a cylinder head 2 (body of an internal combustion engine) e.g. of a diesel internal combustion engine.
  • the in-cylinder pressure detection device 1 is comprised of a first detecting section 11, a second detecting section 12, and an output circuit 13 connected to the first and second detecting sections 11 and 12.
  • the glow plug 3 is comprised of a housing 21 and an inner member 24 (in-cylinder pressure-transmitting member) extending through the housing 21.
  • the housing 21 is comprised of an accommodating section 22 and a support part 23 extending downward from the accommodating section 22.
  • the accommodating section 22 is integrally formed by a top wall 22a and a bottom wall 22b (a pair of end walls) vertically opposed to each other, and a cylindrical sidewall 22c extending between the top wall 22a and the bottom wall 22b.
  • the top wall 22a has an annular shape with a central hole 22d.
  • the outer diameter of the top wall 22a is equal to the outer diameter of the sidewall 22c.
  • the hole 22d has a smaller diameter than the inner diameter of the sidewall 22c.
  • the bottom wall 22b has a hexagonal shape larger in area than an area defined by the sidewall 22c, and has a central part thereof formed with a first receiving hole 22e which is smaller in diameter than the hole 22d.
  • the support part 23 is formed into a slim hollow cylindrical shape extending vertically.
  • the support part 23 has a central inner hole formed as a second receiving hole 23a.
  • the second receiving hole 23a has the same diameter as the first receiving hole 22e of the bottom wall 22b and is continuous with the same. Further, the second receiving hole 23a has a lower end portion thereof formed as a fitting hole 23b with a reduced diameter.
  • the support part 23 has a threaded part 23c formed in a middle portion of the outer peripheral surface thereof.
  • the inner member 24 is integrally formed by a rod-like shaft part 24a extending vertically with a fixed diameter, a flange part 24b formed at an upper portion of the shaft part 24a, and a rod-like glow heater part 24c extending downward from the shaft part 24a, with a fixed diameter.
  • the shaft part 24a has an upper end portion thereof projecting upward through the hole 22d of the accommodating section 22, a middle portion thereof loosely fitted through the first and second receiving holes 22e and 23a, and a lower end portion thereof press-fitted into the fitting hole 23b.
  • the flange part 24b has a disk shape, and has a slightly smaller diameter than the inner diameter of the accommodating section 22.
  • the flange part 24b is disposed at a vertically central location in the accommodating section 22.
  • the glow heater part 24c projects downward from the support part 23.
  • the cylinder head 2 has a first receiving hole 2a, a threaded hole 2b, and a second receiving hole 2c formed therein vertically continuously such that a lower hole has a smaller diameter.
  • the first receiving hole 2a has a larger diameter than that of the support part 23.
  • the second receiving hole 2c has a diameter smaller than the outer diameter of the support part 23 and slightly larger than the diameter of the glow heater part 24c.
  • the glow plug 3 is mounted in the cylinder head 2 by screwing the threaded part 23c of the housing 21 into the threaded hole 2b of the cylinder head 2 and tightening the same.
  • the glow heater part 24c of the inner member 24 is loosely fitted in the second receiving hole 2c, and the lower end portion of the inner member 24 slightly projects into a combustion chamber 4 in a cylinder C.
  • the glow heater part 24c is supplied with electric power from a power supply (not shown) to warm up the combustion chamber 4.
  • the first and second detecting sections 11 and 12 of the in-cylinder pressure detection device 1 are accommodated in the accommodating section 22 at respective symmetrical locations above and below the flange part 24b.
  • the first detecting section 11 is comprised of a first insulation plate 11a, a first output-side electrode plate 11b, a first piezoelectric element 11c and a first ground-side electrode plate 11d arranged from top to bottom in the mentioned order.
  • Each of these elements has an annular shape formed with a hole in a central portion thereof, and the shaft part 24a of the inner member 24 is fitted through these holes.
  • first insulation plate 11a, the first output-side electrode plate 11b, the first piezoelectric element 11c, and the first ground-side electrode plate 11d are sandwiched between the flange part 24b and the bottom wall 22b in a state having a predetermined preload applied thereto.
  • the second detecting section 12 is configured similarly to the first detecting section 11, and is comprised of a second insulation plate 12a, a second output-side electrode plate 12b, a second piezoelectric element 12c, and a second ground-side electrode plate 12d arranged from bottom to top in the mentioned order.
  • the plates and element are also formed with central holes through which the shaft part 24a is fitted.
  • the second insulation plate 12a, the second output-side electrode plate 12b, the second piezoelectric element 12c, and the second ground-side electrode plate 12d are sandwiched between the top wall 22a and the flange part 24b in a state having the above-mentioned predetermined preload applied thereto.
  • the first and second piezoelectric elements 11c and 12c have the same output characteristics, and are electrically connected as shown in FIGS. 2A and 2B. More specifically, as shown in FIG. 2A, a surface of the first piezoelectric element 11c on a side where a positive charge is generated when the first piezoelectric element 11c expands is in contact with the first output-side electrode plate 11b, and a surface on the other side is in contact with the first ground-side electrode plate 11d so as to be grounded. On the other hand, as shown in FIG.
  • a surface of the second piezoelectric element 12c on a side where a positive charge is generated when the second piezoelectric element 12c is compressed is in contact with the second output-side electrode plate 12b, and a surface of the same on the other side is in contact with the second ground-side electrode plate 12d so as to be grounded.
  • the output circuit 13 includes an adder 13a.
  • the output circuit 13 adds up detection signals output from the first and second detecting sections 11 and 12 using the adder 13a, and outputs the resulting signal.
  • the signal is output from the output circuit 13 to an ECU 32 via a charge amplifier 31.
  • the ECU 32 is implemented by a microcomputer comprised of an I/O interface, a CPU, a RAM, and a ROM.
  • the first detection signal an electrical charge
  • the displacement of the inner member 24 causes an increase in the load acting on the second piezoelectric element 12c disposed on the other side of the flange part 24b remote from the combustion chamber 4, whereby the second piezoelectric element 12c is compressed to generate an electrical charge (hereinafter referred to as "the second detection signal") q2.
  • the first and second detection signals q1 and q2 are output via the respective first and second output-side electrode plates 11b and 12b, and added up by the adder 13a of the output circuit 13.
  • a detection signal q obtained by the adding operation is output to the charge amplifier 31 as a signal indicative of the sensed in-cylinder pressure.
  • the charge amplifier 31 converts the input detection signal q into a voltage signal to output the same to the ECU 32.
  • the ECU 32 controls a fuel injection time period of each injector (not shown) of the engine or like parameters according to the input voltage signal.
  • the tightening of the housing 21 against the cylinder head 2 causes compression of the housing 21, which places the inner member 24 in relatively elongated relation to the housing 21.
  • the preload on the first piezoelectric element 11c is reduced to lower the sensitivity of the first piezoelectric element 11c, whereas the preload on the second piezoelectric element 12c is increased to enhance the sensitivity.
  • the respective sensitivity levels of the first and second piezoelectric elements 11c and 12c become higher as the tightening torque is higher.
  • the sensitivities of the first and second piezoelectric elements 11c and 12c change in the opposite directions in accordance with a change in the tightening torque.
  • the use of the detection signal q as an output from the in-cylinder pressure detection device 1 makes it possible to minimize the change in the sensitivity caused by variation in the tightening torque applied for mounting the glow plug 3. Further, according to the present embodiment, since the first and second piezoelectric elements 11c and 12c are configured to have the same output characteristics, constant sensitivity can be obtained irrespective of the tightening torque, which makes it possible to maintain high and stable detection accuracy.
  • the inner member 24 thermally expands.
  • the preload on the first piezoelectric element 11c is reduced to lower the sensitivity of the first piezoelectric element 11c, whereas the preload on the second piezoelectric element 12c is increased to enhance the sensitivity.
  • the thermal expansion of the inner member 24 also changes the sensitivities of the first and second piezoelectric elements 11c and 12c in the opposite directions. Therefore, constant sensitivity can be obtained irrespective of the thermal expansion of the inner member 24, which makes it possible to maintain high and stable detection accuracy.
  • the detection signal q is obtained by adding up the first and second detection signals q1 and q2, the SN (signal/noise) ratio of the detection signal of the in-cylinder pressure detection device 1 can be improved compared with the case where a single piezoelectric element is used. For the same reason, the sensitivity of the in-cylinder pressure detection device 1 can be improved, which makes it possible to enhance detection accuracy of the in-cylinder pressure detection device 1.
  • the single detection signal q is output from the in-cylinder pressure detection device 1, it is possible to simplify a computation process by the ECU 3.
  • the present invention is not limited to the above described embodiment, but can be practiced in various forms.
  • the in-cylinder pressure detection device 1 is integrally formed with the glow plug 3, the in-cylinder pressure detection device 1 may be provided separately from the glow plug 3.
  • the first and second detection signals q1 and q2 are added up by the output circuit 13, the signals q1 and q2 may be separately input to the ECU 32 via the charge amplifier 31 and added up by computation of the ECU 32.
  • the glow plug 3 is mounted in the engine by screwing the housing 21 into the cylinder head 2 and tightening the same, this is not limitative, but the housing 21 may be press-fitted into the cylinder head 2.
  • the in-cylinder pressure detection device according to the present invention can be applied to various types of industrial internal combustion engines including engines for ship propulsion machines, such as an outboard motor having a vertically-disposed crankshaft.
  • a housing 21 has a top wall 22a and a bottom wall 22b opposed to each other, and is screwed into the body of an internal combustion engine.
  • An inner member 24 extends through the housing 21 such that one end thereof projects into a cylinder C, and has a flange part 24b accommodated in the housing 21.
  • a first piezoelectric element 11c is accommodated in the housing 21 and sandwiched between the bottom wall 22b and the flange part 24b in a preloaded state, for outputting a first detection signal q1 according to the in-cylinder pressure transmitted via the inner member 24.
  • a second piezoelectric element 12c is accommodated in the housing 21 and sandwiched between the top wall 22a and the flange part 24b in a preloaded state, for outputting a second detection signal q2 according to the in-cylinder pressure transmitted via the inner member 24.

Claims (2)

  1. Zylinderinnendruck-Erfassungsvorrichtung zum Erfassen eines Zylinderinnendrucks als Druck innerhalb eines Zylinders einer Verbrennungskraftmaschine, umfassend:
    ein Gehäuse, das ein Paar Stirnwände aufweist, die einander gegenüberliegen, und das in einen Körper der Maschine geschraubt ist;
    ein Zylinderinnendruck-Übertragungselement, das sich durch das Gehäuse erstreckt, wobei das Zylinderinnendruck-Übertragungselement ein Ende, das in den Zylinder ragt, und einen Flanschteil aufweist, der im Gehäuse aufgenommen ist;
    ein erstes piezoelektrisches Element, das im Gehäuse aufgenommen ist und sandwichartig zwischen einer der Stirnwände und dem Flanschteil in einem vorbelasteten Zustand angeordnet ist, um ein erstes Erfassungssignal entsprechend dem Zylinderinnendruck, der über das Zylinderinnendruck-Übertragungselement übertragen wird, auszugeben; und
    ein zweites piezoelektrisches Element, das im Gehäuse aufgenommen ist und sandwich-artig zwischen der anderen der Stirnwände und dem Flanschteil in einem vorbelasteten Zustand angeordnet ist, um ein zweites Erfassungssignal entsprechend dem Zylinderinnendruck, der über das Zylinderinnendruck-Übertragungselement übertragen wird, auszugeben.
  2. Zylinderinnendruck-Erfassungsvorrichtung nach Anspruch 1, die ferner eine Ausgangsschaltung zum Ausgeben einer Summe aus dem ersten Erfassungssignal und dem zweiten Erfassungssignal als ein Erfassungssignal, das den Zylinderinnendruck anzeigt, umfasst.
EP05005516A 2004-03-31 2005-03-14 Im Zylinder Druckaufnehmer Expired - Fee Related EP1582722B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004107357 2004-03-31
JP2004107357A JP4308697B2 (ja) 2004-03-31 2004-03-31 筒内圧検出装置

Publications (2)

Publication Number Publication Date
EP1582722A1 EP1582722A1 (de) 2005-10-05
EP1582722B1 true EP1582722B1 (de) 2006-08-30

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EP05005516A Expired - Fee Related EP1582722B1 (de) 2004-03-31 2005-03-14 Im Zylinder Druckaufnehmer

Country Status (4)

Country Link
US (1) US7171846B2 (de)
EP (1) EP1582722B1 (de)
JP (1) JP4308697B2 (de)
DE (1) DE602005000094T8 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2849192B1 (fr) * 2002-12-20 2005-03-04 Siemens Vdo Automotive Appareil de detection de la pression dans la chambre de combustion d'un moteur
US7207214B1 (en) * 2004-02-17 2007-04-24 Wlodarczyk Marek T Glow plug integrated pressure sensor
JP2006300046A (ja) * 2004-08-05 2006-11-02 Ngk Spark Plug Co Ltd 燃焼圧検知機能付グロープラグ
JP2007309916A (ja) * 2006-04-20 2007-11-29 Denso Corp 燃焼圧センサ
FR2903531B1 (fr) * 2006-07-07 2008-09-26 Siemens Vdo Automotive Sas Bougie d'allumage integrant un capteur de pression
DE102008007398A1 (de) * 2008-02-04 2009-08-06 Robert Bosch Gmbh Verfahen und Vorrichtung zum Erkennen des Wechsels von Glühstiftkerzen in einem Brennkraftmotor
JP4483955B2 (ja) * 2008-02-28 2010-06-16 株式会社デンソー エンジンヘッドモジュール
JP4957849B2 (ja) * 2008-11-19 2012-06-20 トヨタ自動車株式会社 筒内圧センサの異常検出装置、筒内圧センサの異常検出方法、内燃機関の制御装置
FR2955215B1 (fr) * 2010-01-08 2012-03-30 Continental Automotive France Bougie d'allumage comprenant un detecteur de pression de cylindre et un detecteur de cliquetis
DE102011078953A1 (de) * 2011-04-07 2012-10-11 Robert Bosch Gmbh Kraftstoffinjektor
WO2017146043A1 (ja) * 2016-02-25 2017-08-31 シチズンファインデバイス株式会社 圧力検出装置および圧力検出システム
KR102359917B1 (ko) * 2017-04-04 2022-02-07 현대자동차 주식회사 차량의 글로 플러그 및 그 제어방법
IT201900020114A1 (it) 2019-10-30 2021-04-30 Politecnico Di Bari Sistema non intrusivo a basso costo per la determinazione della pressione in un cilindro di una macchina motrice o operatrice attraverso il monitoraggio delle sollecitazioni sulla biella

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4382377A (en) * 1980-05-16 1983-05-10 Siemens Aktiengesellschaft Pressure sensor for an internal combustion engine
JPS5880535A (ja) * 1981-11-10 1983-05-14 Ngk Spark Plug Co Ltd 内燃機関の制御装置
JPS6160137U (de) * 1984-09-26 1986-04-23
US4898024A (en) * 1987-05-22 1990-02-06 Nissan Motor Co., Ltd. Piezoelectric pressure measuring instrument
US5126617A (en) * 1987-11-09 1992-06-30 Texas Instruments Incorporated Cylinder pressure sensor for an internal combustion engine
JPH01134392U (de) * 1988-03-07 1989-09-13
JPH0624150Y2 (ja) * 1989-04-03 1994-06-22 日本特殊陶業株式会社 温度および圧力センサ付きスパークプラグ
JPH03293534A (ja) * 1990-04-12 1991-12-25 Nissan Motor Co Ltd 圧力センサの実装装置
US5323643A (en) * 1991-04-09 1994-06-28 Ngk Spark Plug Co., Ltd. Device for detecting change in internal pressure of cylinder
US6138654A (en) * 1998-10-15 2000-10-31 Mide Technology Corporation Piezoelectric ignition and sensing device
JP2002339793A (ja) 2001-05-15 2002-11-27 Nippon Soken Inc 燃焼圧センサ
FR2849911B1 (fr) 2003-01-14 2005-03-04 Siemens Vdo Automotive Bougie pour moteur a combustion interne equipee d'un capteur de pression de chambre de combustion

Also Published As

Publication number Publication date
US7171846B2 (en) 2007-02-06
US20050229685A1 (en) 2005-10-20
DE602005000094T2 (de) 2006-12-21
JP4308697B2 (ja) 2009-08-05
DE602005000094T8 (de) 2007-06-21
EP1582722A1 (de) 2005-10-05
DE602005000094D1 (de) 2006-10-12
JP2005291091A (ja) 2005-10-20

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